#7450: Regression in optimisation time of functions with many patterns (6.12 to 7.4)? -------------------------------------+------------------------------------- Reporter: iustin | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by bgamari): Indeed most of the time spent in the specialiser is spent in `consDictBind`. With respect to `snocDictBinds`: I believe `final_binds` in `specBind` actually can be of length greater than one. Seems worthwhile to keep it. Otherwise it seems fairly clear. I just hacked up a quick attempt; we'll see if it validates. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7450#comment:16 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler